The Testo 625 thermo hygrometer is a compact, handheld instrument with a built-in humidity probe head for
measuring humidity, wet bulb temperature, or dew point as well as temperature. Featuring a probe head that
can be easily removed and attached to the handle via a probe cable or wireless transmitter, the Testo 625
thermo hygrometer is perfect for measuring air moisture in hard-to-reach areas.

The Testo 625 thermo hygrometer has a large 2 line display that includes min./max. values as well as a hold
button to freeze readings. The Testo 625 thermo hygrometer measures humidity from 0 to 100% RH with an
accuracy of ±2.5% and a resolution of 0.1%. Temperature readings from -10 to 60°C are accurate to ±0.5°C
with a resolution of 0.1°C.